What is Cerebrospinal Fluid?

What is Cerebrospinal Fluid?

• A. A network of capillaries in the ventricles
• B. A type of brain tissue
• C. A clear, colorless fluid that surrounds the brain and spinal cord
• D. A protective barrier in the skull

Answer: (C)

Cerebrospinal fluid is the clear, colorless liquid that surrounds and cushions the brain and spinal cord, helping to buoy the brain, maintain a stable chemical environment, and transport nutrients and waste. It circulates through the ventricular system and the subarachnoid space, is mainly produced by the choroid plexus, and is absorbed back into the bloodstream. This makes the fluid distinct from brain tissue, a network of capillaries in the ventricles, or a protective barrier in the skull—each of those options describes a different structure or tissue, not the fluid itself.

Cerebrospinal fluid is the clear, colorless liquid that surrounds and cushions the brain and spinal cord, helping to buoy the brain, maintain a stable chemical environment, and transport nutrients and waste. It circulates through the ventricular system and the subarachnoid space, is mainly produced by the choroid plexus, and is absorbed back into the bloodstream. This makes the fluid distinct from brain tissue, a network of capillaries in the ventricles, or a protective barrier in the skull—each of those options describes a different structure or tissue, not the fluid itself.